a.facebook-btn {
    width: 6rem;
    display: block;
    height: 1rem;
    font-size: .2rem;
    line-height: 1rem;
    text-align: center;
    outline: none;
    cursor: pointer;
    background-color: #344f8e;
    color: #fff;
    border-radius: 1rem;
    margin: 0 auto;
}

